Cutting tool mounting assembly with elastomeric coated bushing

Abstract

A cutting tool mounting assembly adapted for receiving a cutting tool includes a base having a bottom portion and a front portion that defines a receptacle having an inner wall and a bushing configured for receipt in the receptacle of the base. The bushing includes: a forward face defining an aperture for receiving the cutting tool; a shoulder generally opposite the forward face, the shoulder configured for cooperating with the front portion of the base; and a shank portion extending rearward from the shoulder, the shank portion having an outer surface configured for cooperating with the inner wall of the receptacle. A first elastomeric layer is positioned between the shoulder of the bushing and the front portion of the base and a second elastomeric layer is positioned between the outer surface of the shank portion and the inner wall of the receptacle.

What is claimed is: 
     
       1. A cutting tool mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine and adapted for receiving a cutting tool, the cutting tool mounting assembly comprising:
 a base having a bottom portion for attachment to the surface of the rotatable driving member and a front portion that defines a receptacle having an inner wall; 
 a bushing configured for receipt in the receptacle of the base, the bushing comprising:
 a forward face defining an aperture for receiving the cutting tool; 
 a shoulder generally opposite the forward face, the shoulder configured for cooperating with the front portion of the base; and 
 a shank portion extending rearward from the shoulder, the shank portion having an outer surface configured for cooperating with the inner wall of the receptacle; 
 
 a first elastomeric layer positioned between the shoulder of the bushing and the front portion of the base; and 
 a second elastomeric layer positioned between the outer surface of the shank portion and the inner wall of the receptacle, 
 wherein the first elastomeric layer is formed on the shoulder of the bushing and the second elastomeric layer is formed on the outer surface of the shank portion and 
 wherein the first elastomeric layer adjoins the second elastomeric layer to form a continuous elastomeric layer. 
 
     
     
       2. The cutting tool mounting assembly of  claim 1 , wherein the second elastomeric layer has a variable thickness. 
     
     
       3. The cutting tool mounting assembly of  claim 1 , wherein an outer surface of the second elastomeric layer is non-linear. 
     
     
       4. The cutting tool mounting assembly of  claim 1 , wherein the bushing is press fit into the receptacle of the base. 
     
     
       5. A cutting tool mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine and adapted for receiving a cutting tool, the cutting tool mounting assembly comprising:
 a base having a bottom portion for attachment to the surface of the rotatable driving member and a front portion that defines a receptacle having an inner wall; and 
 an elastomeric coated bushing configured for receipt in the receptacle of the base, the elastomeric coated bushing comprising:
 a forward face defining an aperture for receiving the cutting tool; 
 a shoulder generally opposite the forward face, the shoulder configured for cooperating with the front portion of the base; and 
 a shank portion extending rearward from the shoulder, the shank portion having an outer surface configured for cooperating with the inner wall of the receptacle, 
 wherein the elastomeric coated bushing includes a first layer of elastomeric material formed on the shoulder of the bushing, 
 wherein the elastomeric coated bushing includes a second layer of elastomeric material formed on the outer surface of the shank portion, and 
 wherein the first layer of elastomeric material adjoins the second layer of elastomeric material to form a continuous elastomeric layer. 
 
 
     
     
       6. The cutting tool assembly of  claim 5 , wherein the second layer of elastomeric material has a variable thickness. 
     
     
       7. The cutting tool assembly of  claim 5 , wherein an outer surface of the second layer of elastomeric material is non-linear.